Siosepol or Allah-Verdi Khan Bridge is a stone double-deck arch bridge in Isfahan. In Persian means “33 Bridge” or “Bridge of 33 Arches”. Siosepol Bridge is built by the chancellor Allah verdi Khan Undiladze on commission from from Shah Abbas whose chancelor he was.
Construction of the bridge began in 1599 and ended 1602. Bridge is long 298 meters and wide 13.75 meters. It has 33 spans from which it gets its name with the longest span of 5.6 meters, crosses Zayandeh River and is located in the southern end of Chahar Bagh Avenue.
Siosepol Bridge has a large plane at the beginning of the bridge where Zayandeh River flows faster. There it has more arches making with that a suitable place for a tea house that can be accessed from the southern bank. There are two levels of arches. Lower level has 33 arches while upper has two arches above lower lever arch and one arch above pier. Road that goes on the upper level is bounded by two high walls that protect travelers from winds and pedestrians that can walk there, from falling.
Siosepol Bridge is considered largest Iranian construction on water.